if (document.images) {
	img0on = new Image();
	img0on.src = "../ocr_common_img/head_btn00on.gif";
	img0off = new Image();
	img0off.src = "../ocr_common_img/head_btn00.gif";
	img1on = new Image();
	img1on.src = "../ocr_common_img/head_btn01on.gif";
	img1off = new Image();
	img1off.src = "../ocr_common_img/head_btn01.gif";
	img2on = new Image();
	img2on.src = "../ocr_common_img/head_btn02on.gif";
	img2off = new Image();
	img2off.src = "../ocr_common_img/head_btn02.gif";
	img3on = new Image();
	img3on.src = "../ocr_common_img/head_btn03on.gif";
	img3off = new Image();
	img3off.src = "../ocr_common_img/head_btn03.gif";
	img4on = new Image();
	img4on.src = "../ocr_common_img/head_btn04on.gif";
	img4off = new Image();
	img4off.src = "../ocr_common_img/head_btn04.gif";
	img5on = new Image();
	img5on.src = "../ocr_common_img/head_btn05on.gif";
	img5off = new Image();
	img5off.src = "../ocr_common_img/head_btn05.gif";
	img6on = new Image();
	img6on.src = "../ocr_common_img/head_btn06on.gif";
	img6off = new Image();
	img6off.src = "../ocr_common_img/head_btn06.gif";
	img7on = new Image();
	img7on.src = "../ocr_common_img/btn_pagetopon.gif";
	img7off = new Image();
	img7off.src = "../ocr_common_img/btn_pagetop.gif";
}
function imgOn(imgName) {
	if (document.images) {
		document[imgName].src=eval(imgName+"on.src");
	}
}
function imgOff(imgName) {
	if (document.images) {
		document[imgName].src=eval(imgName+"off.src");
	}
}